Very well prof thanks for information's.but i notice a thing prof in applet when [b] theta = 0.0 [/b] mass move to down
I mean even i don't drag slider theta and I'm just press play without drag theta simulation work but what is strange
Is mass work and fall to down
My ask how theta 0.0 and mass fall down i think mass should be move direct or not move but
Is moving down i will upload applet for you check prof

/htdocs/ntnujava/ejsuser/37048/users/br/ahmed/airdrag5_pkg/airdrag5.propertiesFull screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
Download EJS jar file(1470.9kB):double click downloaded file to run it. , Download EJS source (1 times by 1 users) View EJS source